GB986116A - Process for the manufacture of azo pigments having improved flowability - Google Patents

Process for the manufacture of azo pigments having improved flowability

Info

Publication number
GB986116A
GB986116A GB1935861A GB1935861A GB986116A GB 986116 A GB986116 A GB 986116A GB 1935861 A GB1935861 A GB 1935861A GB 1935861 A GB1935861 A GB 1935861A GB 986116 A GB986116 A GB 986116A
Authority
GB
United Kingdom
Prior art keywords
azo
dye
aqueous suspension
aqueous
pigment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1935861A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DEF31326A external-priority patent/DE1155755B/en
Priority claimed from DEF32683A external-priority patent/DE1179908B/en
Application filed by Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB986116A publication Critical patent/GB986116A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0001—Post-treatment of organic pigments or dyes
    • C09B67/0014—Influencing the physical properties by treatment with a liquid, e.g. solvents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B41/00—Special methods of performing the coupling reaction
    • C09B41/001—Special methods of performing the coupling reaction characterised by the coupling medium
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09C—TREATMENT OF INORGANIC MATERIALS, OTHER THAN FIBROUS FILLERS, TO ENHANCE THEIR PIGMENTING OR FILLING PROPERTIES ; PREPARATION OF CARBON BLACK  ; PREPARATION OF INORGANIC MATERIALS WHICH ARE NO SINGLE CHEMICAL COMPOUNDS AND WHICH ARE MAINLY USED AS PIGMENTS OR FILLERS
    • C09C3/00—Treatment in general of inorganic materials, other than fibrous fillers, to enhance their pigmenting or filling properties
    • C09C3/003—Flushing

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coloring (AREA)

Abstract

Azo pigments of improved flowability are prepared by treating an azo pigment in aqueous suspension or in an aqueous paste, during or after manufacture at an elevated temperature, with a water-insoluble organic solvent in a proportion of 1/50 to a hundred times the weight of azo pigment and filtering, washing and drying the pigment so obtained. The process may be carried out in the presence of an emulsifier and preferably at 40 DEG to 100 DEG C. Specified solvents are benzene, toluene, xylenes, chloro- or bromo-benzene, di- or tri-chlorobenzenes, nitrobenzene, chloronaphthalene, quinoline, acetonitrile, methylchloroform, benzyl cyanide or a benzoic acid alkyl ester. In examples: (1) chlorobenzene is added to an aqueous suspension of the disazo dye from tetrazolized 3,31-dichlorobenzidine and 1-acetoacetylamino-2-methoxybenzene (2 mols.) which is then heated to 95 DEG C. by passing in steam, the dye filtered off, washed and dried; (4) an aqueous emulsion of chlorobenzene and a resin soap is added to an aqueous suspension of acetoacetanilide which is then coupled with tetrazodized 3,31-dichlorobenzidine and the whole mixture containing the resultant disazo dye heated to 60-70 DEG C. for 1 hour then filtered off, washed and dried. The treatment of other mono- and dis-azo dye pigments is described in examples.
GB1935861A 1960-05-28 1961-05-29 Process for the manufacture of azo pigments having improved flowability Expired GB986116A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEF31326A DE1155755B (en) 1960-05-28 1960-05-28 Process for the production of azo pigments with improved flowability
DEF32683A DE1179908B (en) 1960-12-02 1960-12-02 Process for the production of azo pigments with improved flow work

Publications (1)

Publication Number Publication Date
GB986116A true GB986116A (en) 1965-03-17

Family

ID=25974677

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1935861A Expired GB986116A (en) 1960-05-28 1961-05-29 Process for the manufacture of azo pigments having improved flowability

Country Status (3)

Country Link
BE (1) BE604345A (en)
CH (1) CH407170A (en)
GB (1) GB986116A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102311659A (en) * 2010-07-07 2012-01-11 龙口联合化学有限公司 Preparation method of pigment used for nitrocotton solvent ink

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3128057A1 (en) * 1981-07-16 1983-02-03 Hoechst Ag, 6000 Frankfurt METHOD FOR IMPROVING THE APPLICATION PROPERTIES OF PIGMENT YELLOW 13

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102311659A (en) * 2010-07-07 2012-01-11 龙口联合化学有限公司 Preparation method of pigment used for nitrocotton solvent ink

Also Published As

Publication number Publication date
BE604345A (en) 1961-11-29
CH407170A (en) 1966-02-15

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